Method of and apparatus for recording and exhibiting



W. J. CITRON METHOD OF AND APPARATUS FOR RECORDING AND EXHIBITING April3, 1928.

Filed Feb. 16. 192' 3 Sheets-Sheet l INVENTORV .ll'lIIl l llllI uw l l lH l l Q mm a April 3, 1928. 1,664,770

W. J. CITRON METHOD OF AND APPARATUS FOR RECORDING AND EXHIBITING FiledFeb. 16. 1927 3 Sheets-Sheet, 5

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TORNEYS.

Patented Apr. 3, 1923.

eanne WILLIAM J. CITRON, OF SAN FRANCISCO, CALIFORNIA.

METHOD OF AND APPARATUS FOR RECORDING AND EXHIBITING.

Application filed February 16, 1927. Serial No. 168,683.

This invention relates to a method of and apparatus for recording andexhibiting stockquotations, election returns, and other .similartransitory information.

The object of the invention is to combine a standard form of typewriterand a prop lantern in such a way that strip of be fed through thetypewriter and written upon, and automatically and with aminimum ofdelay said strip will be passed across the aperture of the projectinglantern and the data written thereon will be projected in a readableform upon a screen. A further object is to control the movements of thestrip of paper by the action of turning the platen roll on the .tyewriter. Another object is to so arrange t e typewriter and projectinglantern relatively that a minimum of space separates the typewriterplaten from the light aperture in the lantern, in order to reduce thetime interval between recording and projecting, and to otherwise savepaper.

In the accompanying drawings are illustrated two different forms whichmy invention may assume. v v

Fig. 1 shows a vertical central sectional view of a preferredarrangement of the apparatus;

Fig. 2 shows a detail sectional view of the guide means in front ofthecondensing lens- Fig. 3 shows a perspective view of the guide means forthe strip of paper which is arranged between the typewriter and thelight aperture;

Fig. 4 shows a vertical sectional. view taken on the line IV of Fig. 1;

Fig. 5 shows a front elevation of the ap 4c paratus;

Fig. 6 shows a lan view in section and diagram of a modified arrangementof the ap aratus.

' n its preferred form the apparatus 1ncludes a base projecting lantern11. This base carries a platform 12 on which is arranged a standard formof typewriter, 13. A roll of paper 14: is mounted at the front edge ofthe platform,

.50 and is fed through a guide 15 beneath the typewriter, thenceupwardly at the rear,

jecting paper may where it passes under and over the platen roll 16 ofthe typewriter. From here the strip of aper passes downwardly to a'guidearrange upon the platform 12. This guide 10 upon which is arranged a ashere shown includes a stationary plate 17 and a hinged plate 18, betweenwhichthe strip of paper passes. Also included in this guide is an idlerroll 19 journaled in slots formed in brackets 20 fixed to the stationarylate 17. Suitable springs 21 are provided to pull the idler roll againstthe stationary plate, so as to apply friction to the strip of paper.

The strip of paper next passes through a guide formed by the front of alens barrel 24 anda window 25 hinged thereto, the lens barrel containstheusual condensing lens 26 and is fixed to the front of the lamp house.From this point the stri of paper passes around a driving roller 2%,which is operatively connected to the platen roller 16 by any suitabledriving means, such, for example, as a flexible shaft 28, and suchgearing 29 as may be necessary to insure equal travel and uniformdirection between the two rollers. The strip of paper is held infrictional contact with the roller 27 b a spring-pressed roller 30,similar to the i ler roller 19. The rollers 19 and 30 serve to keep adesired tension on the strip of paper as it passes across the lightaperture and they permit of sufficient slack being left in the strip ofpaper between the platen roller 16 andthe idler roller 19 so that thenecessary travel of the platen roller endwise on the typewriter will notbe interfered. with.

At the proper distance in front of the condensing lens there is arrangeda projecting lens 31 for projecting the rays of light upon a screensuitably located. As shown in Fig. 1 the rays will be projected along anaxis lying in a vertical plane with the median fore-and-aft line of thetypewriter. This will of necessity require the operator of thetypewriter to position himself to one side of the middle of thetypewriter, so as not to obstruct the 'rays. This, however, is notinconvenient, since the smaller sizes of typewriters may be used and thestrip of paper written upon need be only 3 or 4 inches wide, hencecutting down the amount of travel of the carriage and platen of thetypewriter. It is desirable, obviously, to reduce to a minimum theinterval between typing and projecting, and this I have accom-:

plished in the above-described arrangement. In practice the strip ofpaper between the platen and the light aperture can be reduced to about10 or 12 inches, so that there is comparatively little delay betweenwriting tion shows the shelf extended over the platen of the typewriterin position where the strip of paper may be passed from theplaten overthe shelf and thence to the projecting lantern. WVith the aid of thisshelf the information to be projected can be written manually, as issometimes desirable where the regular typist is temporarily absent.

In Fig. 6 I show a modified arrangement wherein the light is projectedat right angles to the fore-and-aft line of the typewriter, and thus theoperator can take a position fully in front of the typewriter. Thismodification includes a 45 mirror A, arranged between the condensinglenses, and a similar mirror B, arranged in front of the condensinglenses. The strip of paper will be fed in the same manner as before, infront of the condensing lenses, but the matter written thereon will beprojected in readable form at one side of the typewriter.

Various changes in the construction and arrangement of the several partsmay be employed, without departing from the spirit of my invention asdisclosed in the appended claims.

. I Having thus described my invention, what I claim as new and desireto secure by Letters Patent is:

1. An apparatus for recording and exhibiting transitory information,comprising a typewriter having a platen roll, a projecting lanterndisposed below the typewriter, means for guiding a strip of writingmaterial from a supply roll to the platen roll of the typewriter, meansfor guiding said strip from the platen roll across the aperture of thelantern, and means connected with the platen roll for advancing saidstrip past the aperture.

2. An apparatus for recording and exhibiting transito information,comprising a typewriter having a platen roll, a projectlng lanterndisposed below the typewriter, means for guiding a strip of writingmaterial from a supply roll to the platen roll of the typewriter, meansfor guiding said strip from the platen roll across the aperture of thelantern, means connected with the platen roll for advancing said strippast the aperture, and means for maintaining the strip under tensionwhere it crosses the aperture, said means permitting slackto occur inthe strip between the platen roll and aperture.

3. An apparatus for recording and exhibiting transitory information,comprising a typewriter having a platen roll, a projecting lanterndisposed below the typewriter, means for guiding a strip of writingmate-, rial from a supply roll to the platen roll of the typewriter,means for guiding said strip from the platen roll across the aperture ofthe lantern, means connected with the platen roll for advancing saidstrip past the aperture, and ashelf movable into position adj acent theplaten roll, whereby the strip may be passed thereover in position to bewritten upon by hand.

4. An apparatus for recording and exhib- I iting transitory information,comprising a typewriter having a platen roll, a projecting lantern.disposed below the typewriter, means for guiding and moving a strip ofwriting material from asupply roll beneath the typewriter, and thenceupwardly around the platen roll of the typewriter, guide means adjacentthe top of the lantern for frictionally guiding the strip, and meansad-- jacent the lower portion of the lantern for moving said strip, saidlast-named means being operatively connected with the platen of thetypewriter.

WILLIAM J. oirnon.

